1. When people go scuba diving they take a gas tank full of gases. What gases are contained in the tank? Estimate the weight of gas present in a full scuba tank?
Volume = 11 L
P = 170 atm

2. If I fill a balloon with helium it will float. Why does it float? Estimate the mass of helium in the balloon.

2006-08-12 13:35:38 · 5 answers · asked by RED MIST! 5 in Chemistry

1 ⤊

how does lightening and thunder occur?

how does it happen what makes it happen

2006-08-12 13:31:44 · 6 answers · asked by Anonymous in Weather

0 ⤊

If space is a good vacuum they why do objects NOT boil or explode?

If space were a good vacuum, why does solid space debris exist there? Why does the shuttle not boil to pieces?

For example, if you depressurize water here on earth, it would boil and vaporize. I assume this would happen in space with water.

However, this would also happen with lots of other materials...like the coating of any satellites.

Seems like a trivial question, but its not really.

Thanks for any non-conventional thinking!

2006-08-12 13:28:47 · 11 answers · asked by Anonymous in Physics

0 ⤊

Any chemists around?

I may be getting hungup on a term, butcould someone explain the difference between geeen house gases, which maybe heating the Earth and the Greenhose effect written about by Carl Sagan, which after nucklar exchange would cool the Earth. Personally pro envirment for health reasons.

2006-08-12 13:26:58 · 2 answers · asked by Mister2-15-2 7 in Earth Sciences & Geology

0 ⤊

Did Albert Einstein and Thomas Edison ever meet?

If so I wonder what the conversation was like for these two great minds?

2006-08-12 13:20:59 · 5 answers · asked by Pure Wisdom 2 in Engineering

2 ⤊

If a tree falls and there is nobody to hear it, does it still make a noise?

2006-08-12 13:18:22 · 23 answers · asked by thepolishdude 2 in Physics

0 ⤊

planet alignment with the cresent moon in august?

2006-08-12 13:05:31 · 3 answers · asked by Wesley S 1 in Astronomy & Space

2 ⤊

Why do I feel disoriented after being around a strobe light?

2006-08-12 13:00:20 · 5 answers · asked by Anonymous in Other - Science

0 ⤊

I have sen lightning coming from a clear blu skie. (At night, stars all around me) What the h... was it?

2006-08-12 12:55:01 · 4 answers · asked by ullis 4 in Physics

1 ⤊

Can cleaners of any type harm a diamond???

and what should i use to clean them???

2006-08-12 12:53:52 · 8 answers · asked by tom science 4 in Earth Sciences & Geology

1 ⤊

What hapens to a carrot in space?

2006-08-12 12:51:46 · 24 answers · asked by BoB 1 in Physics

4 ⤊

If the Universe is "round" should we "see" our own star and galaxy in diferent places in sky?

If light traveling in one direction will end up in the same place after a trip around the universe, then the brightest spots in our galaxy might be seen in several spots on the firmament likely at different stages in time. Could we consider the sky as a huge space/time mirror? Could we verify this hypothesis?

2006-08-12 12:47:48 · 11 answers · asked by eSoul 2 in Astronomy & Space

1 ⤊

divide 7920 ÷ 1760 and show the work ???

show the answer and the work

2006-08-12 12:45:35 · 11 answers · asked by Anonymous in Mathematics

2 ⤊

Scots, The Welsh, and The Irish don't like the English! Or is it really just the South east of England?

2006-08-12 12:41:39 · 16 answers · asked by Phil H 4 in Geography

0 ⤊

Is there really such a thing as m-state white powder gold?

The Internet talks about it, but no one reputable as far as I can tell.

2006-08-12 12:39:28 · 2 answers · asked by Freeway 2 in Other - Science

1 ⤊

If a bear deficates in the woods and no one is there to smell it, is the pope still Catholic?

2006-08-12 12:39:17 · 7 answers · asked by fly_your_flag_high 5 in Other - Science

5 ⤊

if i was to put a thick pipe around the world ?

and talk through it would the other person on the end of it hear me?

2006-08-12 12:34:57 · 11 answers · asked by whispernikki 4 in Engineering

79 ⤊

Why are meteor showers best viewed after midnight?

2006-08-12 12:29:05 · 9 answers · asked by Luis 4 in Astronomy & Space

1 ⤊

who do you think created the world?

do not answer... God.

2006-08-12 12:22:19 · 13 answers · asked by gabbybubbles 1 in Geography

3 ⤊

if f(x)=3x^2-x+2 find [f(a)]^2?

im not sure how to distribute the square to the function

2006-08-12 12:19:48 · 6 answers · asked by Anonymous in Mathematics

2 ⤊

Pump A can fill a tank in 5 minutes while pump B can fill a tank in 10 minutes.?

How long will it take to fill the tank if both are working together?

2006-08-12 12:16:06 · 18 answers · asked by Joey 2 in Mathematics

2 ⤊

How do you know outer space is infinite? And is not cyber space constantly expanding just the same as the uni?

The question still stands ,the point is which will stop first.

2006-08-12 12:12:00 · 16 answers · asked by reader 1 in Astronomy & Space

0 ⤊

is my orange tree going to die?

I have a potted orange tree that’s almost three years old and it’s about a foot and a half high. I started this tree from seed and planted it in miracle grow soil. I repotted it only once. I live in northern Vermont and the tree lives indoors. I water it weekly and right now it’s living next to spider plants. It was doing fine until now. The problem with this tree is that it is starting to discard the new leaves that grow at its ends. Then I also noticed orange crystals growing on the branches of my orange tree where the new leaves fall off. Does this orange tree have a disease?

2006-08-12 12:11:03 · 2 answers · asked by Niceyguy 2 in Biology

0 ⤊

how can i learn action script?

2006-08-12 12:09:24 · 1 answers · asked by Anonymous in Engineering

9 ⤊

will mars actual been seen as large as the moon in your (Australian)skies over the next few weeks.?

2006-08-12 12:04:51 · 11 answers · asked by lady_lee_au 1 in Astronomy & Space

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